For a number of years, UV technology has been a reliable technique for the curing of photo-reactive chemicals. In response to increasing production speeds and new applications, for instance in the field of 3D, UV lamp technology has also developed. Presently, a significant range of different systems are available, each specific to the particular application.
Users and providers of chemistry are continually developing new applications for UV curing. Their groundbreaking ideas mostly mean increasing demand on UV curing devices – where at times conventional UV technology has touched its technical limits. Therefore, within the recent years, a totally new branch of UV technology has formed: UV LEDs. This article offers the reader with an objective comparison between both technologies, UV and UV LED. It should help the user determine to what degree LEDs can provide a substitute to conventional UV solutions.
The operating technology of conventional UV lamps is based on plasma physics and optics, while UV LEDs are based on optics and semiconductor technology.
LEDs are founded on semiconductor technology. Specific wavelengths are directly discharged by the current input. The spectrum is a quasi-monochromatic radiation in distinct wavelengths, for example 365 nm, 385 nm or 405 nm.